TY - JOUR AU - Gil De Paz, Armando PY - 2007 DO - 10.1086/513730 SN - 0004-637X UR - https://hdl.handle.net/20.500.14352/51763 T2 - Astrophysical journal AB - We present the results from the analysis of optical spectra of 31 Hα-selected regions in the extended UV (XUV) disks of M83 (NGC 5236) and NGC 4625 recently discovered by GALEX. The spectra were obtained using IMACS at the Las Campanas Observatory 6.5... LA - eng M2 - 115 PB - American Astronomical Society KW - H-II regions KW - Chemo-spectrophotometric evolution KW - Emission-line galaxies KW - Star-formation rate KW - Oxygen abundance determination KW - Combined stellar structure KW - De-Madrid list KW - Spiral galaxies KW - Infrared-emission KW - Galactic disks TI - Chemical and photometric evolution of extended ultraviolet disks: Optical spectroscopy of M83 (NGC 5236) and NGC 4625 TY - journal article VL - 661 ER -